Technique with three Earth-sized planets uncovered — ScienceDaily
The data about these new exoplanets has been obtained from the facts collected by the K2 mission of NASA’s Kepler satellite, which started in November 2013. The perform, which will be released in the Regular Notices of the journal Royal Astronomical Society (MNRAS), reveals the existence of two new planetary techniques detected from the eclipses they create in the stellar light-weight of their respective stars. In the study team led jointly by Javier de Cos at the University of Oviedo, and Rafael Rebolo at the IAC, participate, alongside with scientists from these two centres, many others from the University of Geneva and the Gran Telescopio Canarias (GTC).
The initially exoplanetary method is positioned in the star K2-239, characterised by these researchers as a crimson dwarf form M3V from observations produced with the Gran Telescopio Canarias (GTC), at the Roque de los Muchachos Observatory (Garafía, La Palma). It is located in the constellation of the Sextant at 50 parsecs from the Sun (at about 160 light many years). It has a compact program of at minimum 3 rocky planets of equivalent measurement to the Earth (1.1, 1. and 1.1 Earth radii) that orbit the star each individual 5.2, 7.8 and 10.1 days, respectively.
The other purple dwarf star called K2-240 has two tremendous-Earth-like planets about twice the measurement of our world. Although the atmospheric temperature of red dwarf stars, around which these planets revolve, is 3,450 and 3,800 K respectively, almost half the temperature of our Sunshine. These researchers estimate that all planets discovered will have temperatures superficial tens of levels greater than those people of the world Earth because of to the strong radiation they receive in these shut orbits to their stars.
Foreseeable future observation strategies with the new James Webb area telescope will characterize the composition of the atmospheres of the found planets. Spectroscopic observations with the ESPRESSO instrument, set up in the Pretty Large Telescope (VLT), of the European Southern Observatory (ESO), or with upcoming spectrographs in the GTC or in new astronomical amenities, these as the ELT or the TMT, will be critical to determine the masses, densities and bodily attributes of these planets.
The Gran Telescopio Canarias (GTC), mounted at the Roque de los Muchachos Observatory (Garafía, La Palma) is section of the Singular Scientific and Complex Infrastructure network (ICTS) of Spain.